nixos/bluetooth: add input and network service configs

nixos/modules/services/hardware/bluetooth.nix

···
         };
         description = lib.mdDoc "Set configuration for system-wide bluetooth (/etc/bluetooth/main.conf).";
       };
+
+      input = mkOption {
+        type = cfgFmt.type;
+        default = { };
+        example = {
+          General = {
+            IdleTimeout = 30;
+            ClassicBondedOnly = true;
+          };
+        };
+        description = lib.mdDoc "Set configuration for the input service (/etc/bluetooth/input.conf).";
+      };
+
+      network = mkOption {
+        type = cfgFmt.type;
+        default = { };
+        example = {
+          General = {
+            DisableSecurity = true;
+          };
+        };
+        description = lib.mdDoc "Set configuration for the network service (/etc/bluetooth/network.conf).";
+      };
     };
   };
 
···
     environment.systemPackages = [ package ]
       ++ optional cfg.hsphfpd.enable pkgs.hsphfpd;
 
+    environment.etc."bluetooth/input.conf".source =
+      cfgFmt.generate "input.conf" cfg.input;
+    environment.etc."bluetooth/network.conf".source =
+      cfgFmt.generate "network.conf" cfg.network;
     environment.etc."bluetooth/main.conf".source =
       cfgFmt.generate "main.conf" (recursiveUpdate defaults cfg.settings);
     services.udev.packages = [ package ];

pkgs/os-specific/linux/bluez/default.nix

···
     mkdir $out/etc/bluetooth
     ln -s /etc/bluetooth/main.conf $out/etc/bluetooth/main.conf
 
+    # https://github.com/NixOS/nixpkgs/issues/204418
+    ln -s /etc/bluetooth/input.conf $out/etc/bluetooth/input.conf
+    ln -s /etc/bluetooth/network.conf $out/etc/bluetooth/network.conf
+
     # Add missing tools, ref https://git.archlinux.org/svntogit/packages.git/tree/trunk/PKGBUILD?h=packages/bluez
     for files in `find tools/ -type f -perm -755`; do
       filename=$(basename $files)